Received 20 December 2007Accepted 18 January 2008Published online 08 February 2008

Acknowledgments:

We thank Kojundo Chemical Laboratory Co., Ltd. for preparing the PZT liquid source precursor. This work has been partially supported by the Spanish Xunta de Galicia under Grant No. PGIDIT03TMT30101PR and by EPSRC-F001630. G.C. acknowledges financial support of a Marie Curie Fellowship and F.D.M. would like to thank the Royal Society for support.